2018 Long Range Weather Forecast for Lachute, QC

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How to Read Long-Range Weather Forecasts

Long-range predictions show weather trends in temperatures and precipitation. For example, will the winter be colder or warmer than average? Will there be more or less snow than what's typical for your area? Our famous predictions (traditionally 80% accurate) are made 18 months in advance, and meant to help you make more informed decisions for long-term planning.

Annual Weather Summary: November 2017 to October 2018

Winter will be snowier than normal, with above-normal precipitation and near- to above-normal temperatures. The coldest periods will be from late December into early January and late January into early February and in mid-February, with the snowiest periods in mid-December, early and late February, and early April. April and May will be rainier and slightly cooler than normal. Summer will be hotter than normal, with the hottest periods in late June, early July, and early August. Rainfall will be above normal in the east and below normal in the west. September and October will be slightly warmer than normal, with below-normal precipitation.